Machine for sewing on buttons



(No Model.) 4 Sheets-Sheet 1. J. J. SULLIVAN. MACHINE FOR SEWING 0N BUTTONS.

No. 595,742. Patented Dec.21, 1897.

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J. J. SULLIVAN. MACHINE FOR SEWING 0N BUTTONS.

No. 595,742. Patented De0.21,1,897.

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(No Model.) 4 SheetsSheet 3.

J. J. SULLIVAN.

MACHINE FOR SEWING ON BUTTONS. No. 595,742. Patented Dec.21, 1897.

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(No Model.) 4 Sheets-Sheet 4.

J. J. SULLIVAN. MACHINE FOB SEWING ON BUTTONS.

No. 595,742. Patented Dec. 21 1897.

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Nrrnn STATES P TENT Fries.

JOHN J. SULLIVAN, OF IPSWICH, MASSACHUSETTS.

MACHINE FOR SEWING ON BUTTONS.

SPECIFICATION forming part of Letters Patent No. 595,742, dated December 21, 1897.

Application filed March 15, 1895- Serial No. 541,860. (No model.) I

To all whmn it may concern:

Be it known that I, JOHN J. SULLIvAN,a citizen of the United States, residing at Ipswich, in the county of Essex and State of Massachusetts, have invented certain new and useful Improvements in Button-SewingMachines,of which the following is a specification, reference being had therein to the accompanying drawings.

My invention relates to a machine for sewin g buttons to shoes or other articles to which it'may be desirable to attach the same and in which is incorporated means controlled by the operator whereby buttons may be successively transferred from a button chute or guideway to'the needle.

My invention is preferably applied to a machine having a stitch-forming mechanism comprising means for imparting horizontal movements to the needle-bar and needle, the machine in accordance with my invention havinga feeding mechanism which operates at intervals to advance the work from one button-sewing position to another, my invention including means whereby the horizontal movements of the needleare suspended when the feeding mechanism is operating to advance the'work, and the feeding mechanism being inoperative when the horizontal or overseaming movements of the needle are occurring. In other words, the horizontal movements of the needle-bar and needle to form overseaming button-attaching stitches and the work-advancing movements of the feed are alternated with each other, so that a button will be secured to the work by a suitable predetermined number of overseaming, stitches while the work remains stationary, and the overseaming movements of the needlebar and needle will then be suspended, but without suspending their Vertical movements, and the feed be thrown into operation to advance the work to a position for sewing on the next button; the button-attaching or overseaming stitches being thus practically a part of a continuous seam extending from one button to another. As a predetermined number of stitches will be formed between the buttons, the distance apart of the latter will depend on the length of the plainstitches between the stitches.

overseamin g or buttonattaching In the drawings, Figure 1 is a front side view of a Singer oscillating shuttle-arm or cylinder machine embodying my invention. Fig. 2 is a rear side view of the same, partly in section. Fig. 3 is a front end view, and Fig. 4 a rear end view, of the same. Fig. 5 is a detail view on line 00 on, Fig. 3, looking down. Fig. 6 is a detail bottom view of the presser-foot, and Fig. 7 a detail plan view of the button pusher or feeder. Fig. 8 is a plan view of the button reservoir or hopper, showing the button agitating or feeding brush within the same and the button-shank slot opening out into the slot or groove of the button-chute; and Figs. 9, 10, and 11 are detail views to show the worm, worm cam-wheel, and connect-ions between the latter and the feeding mechanism.

A denotes the base of the machine, from which extends forward the work-supporting horn or cylinder A, within which is the rocking shuttle-operating shaft a and the rocking feed-shaft a, the latter carrying at its front end the feed-dog a Surmounting the base A is the bracket-arm B, in the upper part of which is journaled the driving-shaft 1), pro vided at its rear end with the pulley I), having a clutch connection with said shaft by means of the clutch-dog N, which is mounted in the wheel or hub 5 fixed to said shaft, said dog beingnormally pressed forward into clutching engagement with the flange b of said pulley by a coil-spring b interposed between a projection Z) on said wheel or hub and said dog. At the rear of the bracketarm B is a projection or bracket 12 within;

which is a vertically-movable stop-bar b pressed upward bya spring 12 but normally held downward by'a spring-pressed locking bolt or rod 6 the rear end of which enters a notch in said bar, the forward end of said locking-rod being connected to the lower end of a tripping-lever b operated, as hereinafter described, to withdraw said rod from en gagement with said stop-bar, when desired, to permit the spring 6 to lift said bar so as to bring its upper end into the path of the clutch-dog b to release the latter from clutching engagement with the flange b of the pulley b. Bearing against the upper end of the stopbar 19 is a stiff buffenspring Z7 attached at its lower end by a screw Z9 to the projection or bracket if, said buffer-spring serving to cushion the impact and lessen the jar when the clutch-dog strikes the stop-bar and is in turn forced back into contact with the projection I) on the hub b the said stop-bar having a width less than its slideway in the bracket 1) to permit it to move sidewise to a limited extent as the buffer-spring Z) yields when the machine is stopped.

G is the needle-bar, connected by a pitm an o to a crank at the forward end of the driving-shaft b, said needle-bar carrying the usual eye-pointed needle 0 and being reciprocated vertically in ahorizontally-swinging frame 0 pivotally mounted on center screws 0 so that the needle-bar and needle maybe moved horizontally transversely of the worksupporting horn or cylinder A or in the line of the feed of the work, which is across said horn or cylinder.

D is a cam-wheel having teeth (1 at one portion of its periphery meshing with a worm Z9 on the shaft Z), said cam-wheel having in its front face a cam-groove d 61 entered by a pin e on the lever E, pivoted at c and connected by a pitman e to the swinging needlebar frame 0 said frame being thus operated by said cam-wheel. The said cam-groove has a concentric part (I, and when this concentric part of said groove is passing the pin 6 the swinging movements of the needle-bar frame, and consequently the horizontalmovements of the needle-bar and needle, will be suspended and plain stitches will be made; but when the serpentine or irregular part (Z of said camgroove is passing said pin (2 the needle-bar and needle will be moved horizontally to form overseaming or button attaching stitches, the number of these overseaming or buttonattaching stitches made at each rotation of said cam-wheel depending on the number of curves or cam-points in the said cam-groove. The feed rock-shaft a is operated in the manner usual in the well-known Singer lockstitch machines from the cam Z2 on the shaft I) through the feed connection or lever b the lower end of which is jointed to an arm at the rear end of said rock-shaft. The lever Z2 is connected by a link 73 with the usual feed regulator of the Singer machine, this feedregulator consisting of a short shaftf, having an armf, to which the lower end of said link I) is jointed at f and a second armf which may be moved up and down to change the relation of the toggle (consisting of the arm f and link 12") to the lever I) to vary the upand-down movement imparted to said lever or feed connection by the cam 79 the position of the joint f between the arm f and the link b determining the length of the feed, the feed being diminished by bringing the link I)" nearer parallel to the lever B and being increased by changing the regulator so as to throw the lower end of said link away from said lever, as is usual with this toggle-feed.

To entirely arrest the operation of the feed when the overseaming or button-attaching stitches are being formed, I provide a feedsuspending device consisting, as herein shown, of a bell-crank lever, one arm, g, of which is provided with a pin 9 entering a cam-groove d in the periphery of the cam wheel D. The other arm, g, of said lever carries a pin g connecting said arm g to alever g pivoted at g to a bracket rigid with the bracket-arm B, the slotted inner or free end of said lever g embracing a pin f on the arm f of the feed-regulator. By the connection just described of the feed-suspending lever with the feed-regulator it results that when in the rotation of the cam-Wheel D the serpentine or acting part (1 of the face camgroove therein is just passing by the pin e, so that the horizontal movements of the needlebar and needle are to be suspended, an operating part of the cam-groove cl in said camwheel acts on the pin g in the arm g of the feed-suspending lever and causes said lever to so change the position of the feed-regulator as to set the feed (which had been arrested while the overseaming or button-attaching stitches were being formed) into operation, and just as the serpentine or acting part d of. the said face cam-groove agam reaches the said pin 6 the cam groove d again changes the position of the feed-suspending lever and throws the feed out of action. Thus the feeding movements of the feed-dog and the overseaming movements of the needle-bar and needle will be alternated with each other, so that a series of overseaming or buttonattaching stitches will be made when the work is at rest and a series of plain stitches will be made when the work is fed to space the buttons.

The cam-wheel D carries a pin cl", which is so arranged on said wheel that when the camgroovc cl has acted on the feed-suspending lever and the feed has been stopped said pin will engage the tripping-lever I) to cause the latter to Withdraw the locking belt or rod I) from engagement with the stop-bar b and thus permit the spring 7)" to throw said -bar upward into the path of the outer end of the clutch-dog b to disengage the said dog from the pulley b, and thus stop the machine.

The worm-operated cam-Wheel D is inter mittingly rotated that is to say, the movement of said worm-wheel imparted thereto at each rotation of the driving-shaft is effected during a partial revolution of said shaft-s0 that the horizontal movements of the needlebar will take place while the needle is out of the work, this result being accomplished in a well-known manner by giving the Worm b an irregular pitch instead of a regular screwpitch. With the use of a Worm 1) having a certain pitch a certain number of stitches will be formed at each revolution of the worm cam-wheel D, these stitches being divided into plain and over-seaming stitches accord ing to the relative lengths of the serpentine and concentric parts of the cam-groove cl (1 As a certain predetermined number of plain stitches will thus be formed between the but- IIO tons the distance apart of the latter will depend on the length of these plain stitches, and it is for the purpose of governing the lengths of these plain stitches that the feedsuspending lever is indirectly connected with the feed-regulator through the lever g The pin g is adjustable in the slot in the arm g of the feed-suspending lever and also in the slot of the lever 9 so that by changing the position of this pin 9 relative to the f ulcrumpoints of these levers the outer end of the arm f of the feed-regulator (where the pin f acted on by the lever 9 is located) will be left higher or lower, as may be desired,

when the feed-regulator is moved to throw the feed into action, and thus the length of the feed will be greater or less, according to the distance apart at which it may be desired to space the buttons. The higher the outer end of the arm f is raised the more the lower end of the link I) will be moved outof line with the lever b and the greater the length of feed will be, and vice versa.

H denotes a receptacle or hopper for holding the buttons, and H is a stationary or fixed raceway or chute which conducts the buttons from said hopper to a point adjacent to the needle. Connected with the cam-wheel D,

to rotate therewith, is a bevel-gear d meshing with a bevel-gear d on a short vertical shaft d extending up into the hopper H and having attached to its upper end a button stirring or agitating device, consisting, preferably, of brushes C1 The bottom of the hopper is provided with a slot h to receive the shanks of the buttons, said slot opening at 'the outer edge of the bottom of the hopper into a slot or groove h, formed in the chute H, so that buttons whose shanks have been entered into the said slot h may be forced outward into said chute by the agitating device or brush 01 The chuteH is provided at its lower end with a spring 77?, which prevents the buttons from escaping atimproper times from said chute, the latter, as herein shown, terminating at one side in a curved finger if.

I is the presser-foot provided with a curved finger 1l,which is arranged above and slightly separated from the finger h so that between these'two parts will be left an opening forming a continuation of the shank receiving groove or slot h of the chute H, and thus the shanks of the buttons can pass beneath said 'fingert'when forced to the needle,the presserfoot having in its bottom a curved recess 2' which receives the heads of the buttons.

Adjacent to the lower end of the buttonv chute is a swinging button-transferring device or pusher 76, the shank of which has a vertical pivot journaled in the bracket Z9 suspended from the head at the forward end of the bracket-arm B of the machine, said button-pusher being connected by a rod k attached at one end to an arm k on said pivot 70, to the upper end of a lever m, joined at its lower end by a link 'm to an arm n of the collar k is a spiral spring 10 a rock-shaft N, extending transversely of the baseA and having a second arm n, to which is attached a treadle -operated rod L; The rod 70 is provided with two collars k 70 and the lever m has at its upper end an eye or loop m which loosely embraces said ,rod.

The said eye or loopm is contiguous to the collar 10 but between said eye or loop and Attached to the lower end of the stop-bar b isa rod 70 having a loop 15 extending beneath the arm n, to which the treadle-rod L is attached, so

that when said arm is depressed it will engage said loop and thus draw down the stopbar I) and thereby disengage its upper end from the clutch-dog b to permit said clutchdog to be thrown by the spring 17 into. holding engagement with the continuously-rotating or power-driven pulley b to connect said pulley with the drivingshaft 1) to start the machine. The treadle-rod L is to be connected with an ordinarysewing-machineheeland-toe treadle, so that it maybe lowered or raised positively. When a button is to be transferred from the button-chute H to the needle, the operator depresses the treadlerod L, connected, as above described, to the button-pusher is, causing said pusher to act on thelowermost button in said chute and force the same outward, the button-head being guided in its outward movement by the curved recess 1' in the bottom of the presserfoot I and the curved finger '6, so that the shank of the button will be brought into such position that when the needle resumes its overseamin g or horizontal movements it will descend alternately into and outside of the eye of said. shank, so as to attach the button to the work by overseaming-stitches.

When the machine has been stopped and before it is again started, a button is to be transferred from the button-chute to sewing position. To provide for this operation and to permit the button-pusher and thestartmotion device to be operated from one movement of the treadle-rod, the spring 70 interposed between the eye or loop m of the lever m and the collar 70 on the rod 16 is stifi enough to operate the button-pusher to transfer the button to the needle without being compressed appreciably; but after the button has been forced into sewingposition and the forward movement of the button-pusher has been stopped, by positive contact of the button with the presser-foot or other fixed part, a still further downward movement of the treadle-rod is necessary to fully disengage the stop-bar b from the clutch-dog b and in this further downward movement of the treadle-rod the spring 70 becomes com-' pressed between the eye or loop m and the collar is". The collar 70 is providedwith a projection is", which in the backward movement of the rod 70 engages a stop device or pin a on the housing a inclosing the worm cam-wheel D, so that the backward movement of the button-pusher and the upward movement of the treadle-rod L will be thus positively limited or stopped.

beneath the needle, and a continued -down.

ward movement of the treadle-rod disengages the stop-bar b from the clutch-dog b to start the machine, which commences to sew by overseamin g or button-attachin g stitches, the serpentine or operating part (1 of the camgroove cl d being at this time passing the pin 6, so as to impart horizontal movements to the needle-bar and needle, and when these horizontal movements cease the feed, which had meanwhile been idle, is thrown into operation to advance the work and make plain stitches, as hereinbefore described. When a proper number of the latter have been made, to bring the work into position for the next button the cam-groove d acts on the feed-suspending lever g g to throw the feed out of operation, and at the same time the pin cl on the cam-wheel D engages the trippinglever Z) to withdraw the locking-bolt (2 from engagement with the stop-bar b so that said bar is now free to be shot upward by its spring I) into the path of the clutch-dog b to stop the machine. Thus with a machine constructed as hereinbefore described the work may continue, the buttons being transferred from the button-chute to the needle by the treadle-operated button pusher or feeder, and the machine being automatically stopped when the work has been fed, and the machine will again be started bythe operator by the same treadlerod which operates the said button pusher or feeder. It is, however, not necessary that the machine should be stopped for each button sewed on, as the treadle-rod L may be depressed by the operator to transfer a button from the button-chute to sewing position while the work is being fed and plain stitches are being formed, and if the said treadle-rod be held depressed when the tripping-lever is operated to withdraw the locking-bolt from the stopbar the latter will be held from shooting upward to stop the machine. If the treadle-rod be thus held depressed at the time when the feed of the work'ceases, the overseaming or lateral movements of the needle will be resumed without cessation of the operation of the machine, and the needle, which in making plain stitches was too far toward the operator to enter the eye of the button-shank, will in its overseaming movements descend alternately into and outside of said eye to attach the button to the work. Thus my improved machine, although organized to stop at each button, may nevertheless be operated continuously until a whole set of buttons has been sewed to a button-piece.

Although I have herein shown the non-automatic button-feeder 7c,which serves to transfer the buttons successively from the lower end of the fixed or stationary button chute or guideway II to sewing position, as being adapted to be pedal-operated by means of the treadle-rod L, I do not wish to be understood as limiting the'non-automatic button-feeding feature of my invention to a pedal-operated button-feeder, as this non-automatic feeder may be actuated by the knee or hand of the operator, if desired, by substituting an ordinary knee-lever, such as is in common use for lifting the presser-feet of sewing-machines for the treadle-rod, or by moving the feeder manually. In fact, the button-feeder of my machine herein shown and described has already been successfully operated manually without the treadle-rod L, the operator each time a button was to be transferred from the button-chute to the needle merely pressing down with his thumb or fingers on the outer end of the arm n of the rock-shaft N.

Having thus described my invention, I claim and desire to secure by Letters Patent- I 1. In a button-sewing machine, the combination with a stitch-formin g mechanism and an automatic feeding mechanism for advancing the work to space the buttons, of a fixed or stationary button chute or guideway the lower end of which extends to a point closely adjacent to the work-plate, and a pedal-actuated button-feeding device located at said lower end of said chute and by means of which the operator may transfer buttons from said chute to sewing position.

2. In a button-sewing machine, the combination with a stitch-forming mechanism, of an automatic feeding mechanism for advancing the work to space the buttons, buttonfeeding appliances comprising a stationary or fixed button chute or guideway and a button-feeding device for transferring buttons from said chute to sewing position, and an automatic stop-motion mechanism normally acting to suspend the operation of the machine after each button has been attached.

3. In a button-sewing machine, the combination with a stitch-forming mechanism, of an automatic feeding mechanism for advancing the work to space the buttons, buttonfeeding appliances comprising a stationary or fixed button chute or guideway and a button-feeding device for transferring buttons from said chute to sewing position, an automatic stop-motion mechanism normally acting to suspend the operation of the machine after each button has been attached, and a controlling device by which the operator may, when desired, suspend the action of the said stop-motion mechanism so that the machine will run continuously to sew on a series of buttons.

4. In a button-sewing machine, the combination with a stitch-forming mechanism, of

' an automatic feeding mechanism for advancing the work to space the buttons, at stationary or fixed button chute or guideway, a nonautomatic or operator-actuated button-feeder for transferring buttons from said chute or guideway to sewing position, and an automatic stop-motion mechanism normally acting to stop the ndachine after each button has been attached.

5. In a button-sewing machine, the combination with a stitch-forming mechanism, of an automatic feeding mechanism for advancing the work to space the buttons, a stationary or fixed button chute or guideway, a pedal-operated button-feeder for transferring buttons from said chute or guideway to sewing position, and an automatic stop-motion mechanism normally acting to stop the machine, after each button has been attached.

6. In a button-sewing machine, the combination with a stitch-forming mechanism, of an automatic feeding mechanism for advancing the work to space the buttons, a button chute or guideway, a non-automatic or operator-actuated button-feeder for transferring buttons from said chute or guideway to sewing position, an automatic stop-motion mechanism normally acting'to stop the machine after each button has been attached, and a controlling device by which the operator may, when desired, suspend the action of the said stop-motion mechanism so that the machine will run continuously to sew on a series of buttons.

7. In a button-sewing machine, the combination with a stitch-forming mechanism, of an automatic feeding mechanism for advancing the work to space the buttons, a stationary or fixed button chute or guideway the lower end of which extends to a point closely adjacent to the Work-plate, a button-feeder located at the lower end of said button-chute, and means whereby said feeder maybe actuated by the operator to transfer buttons from said chute or guideway to sewing position relative to the needle and work-plate.

8. In a button-sewing machine, the combination with a stitch-forming mechanism and a fixed or stationary button chute or guide-- way, of a horizontally-movable, pedal-operated button-feeder located at the lower end of said chute and serving to transfer buttons from the latter to sewing position, and an automatic feeding mechanism foradvancin g the work to space the'buttons.

9. In a button-sewing machine, the combination withbutton-feeding devices,of a stitchforming mechanism comprising a horizontally-movable needle-bar and needle and an automatic feeding mechanism, independent of said needle-bar and needle, for advancing the work to space the buttons, of an automatic mechanism acting to suspend the horizontal movements of the needle and the'workadvancing action of the feed alternately, to

and horizontal movements thereto, of an independent automatic Work-feeding mechanism, automatic devices for presenting buttons to the said needle, a needle-bar-controlling cam by which lateral movements are imparted to the needle-bar and needle, when desired, and which also serves to suspend the said horizontal movements, and a feed-controlling cam to throw the feed into and out of operation, said cams being so timed relative to each other that when the horizontal movements of the needle are suspended the feeding mechanism is operative, and when the feeding mechanism is inoperative, horizontal movements will be imparted to the said needle-bar and needle.

11. In a button-sewing machine, the combination with a stitch-forming mechanism, of a button receptacle or hopper having a curved slot or recess in its bottom and within the periphery of the latter, for the reception of the shanks of the buttons, a button-chute having also a button-shank groove or recess into which the said slot or recess in the bottom of the hopper opens, and a button-stirring de-.

vice or pusher within said hopper serving to force the buttons outward from said hopper into said chute with their shanks in the groove or recess of the latter. I v

12. In a button-sewing machine, the combination with a stitch-forming mechanism, of an automatic feeding mechanism for advancing the work to space the buttons, a stationary or fixed button-chute, a button -feeder controlled by the operator and serving to transfer the buttons successively from said chute to the needle, and a start-motion device connected with said button-feeder and acting to set the machine in operation by a continuation of the same movement which feeds up a button.

13. In a button-sewing machine, the combination with a stitch-forming mechanism comprising a horizontally movable needle-bar and needle, of a button-feeding mechanism which brings the buttons to such position relative to said needle that the latter will pass through the eye of a button when the needle is in one of its horizontal positions, but will pass outside of the said eye when in its other horizontal position, an automatic feeding mechanism independent of the needle-bar and needle for advancing the work, and means for alternately suspending and throwing into action the-horizontal movements of the needle and the operation of the feed, the needle being in such position, when the feed is operating, as to pass outside of the eye of a button-shank which is in sewing position.

14. In a button-sewing machine, the combination with a stitch-forming mechanism, of a ICC fixed or stationary button-chute, as H, the horizontally-movable button-feeder k for transferring buttons from the lower end of said chute to the needle, the rod for operating said feeder, the lever m, the link m, the rock-shaft N having arms 01 and a, and the treadle-rod L connected to said arm 'n.

15. In a button-sewing machine, the combination with a stitch-forming mechanism, of a fixed or stationary button-chute, the horizontally-movable button-feeder is located at the lower end of said chute and serving to transfer buttons from the latter to the needle, the rod 70 the lever on yieldingly connected to said rod by an interposed spring, the rockshaft N having arms wand n, a treadle-rod L connected to said arm n, and a start-motion device constructed and arranged to be actuated to set the machine in operation, by

a continuation of the same movement of the i said arm n which is required to operate the said button-feeder in feeding a button to the needle.

16. In a button-sewing machine, the combination with a stitch-forming mechanism comprising a horizontally-movable needle-bar and needle, of the intermittingl y rotated camwheel D having a feed-con trolling cam, as cl, and having also a needle'bar-controlling cam consisting of a concentric or non-operative cam-groove, or part (Z and a serpentine or operative groove or part (1*, connections between said cam-wheeland needle-bar whereby the latter may be moved laterally when desired, a feeding mechanism, and connections between the latter and said feed-oontrollin g cam, the latter acting to set the feed into action and to suspend its operation, alternately.

17. In a button-sewing machine, the combination with the driving shaft thereof, a stitchforming mechanism operated from said shaft, and button-feeding appliances, of a stop-mo iion device consisting of the loose pulley I) having the flange b, the spring-pressed clutchdog the wheel or hub fixed to said shaft and in which said clutch-dog is mounted, the stop-bar h a spring for forcing the latter toward the path of movement of said clutchdog, a locking rod or bolt serving to hold said stop-bar away from said dog, a spring which presses said locking rod or bolt toward said stop-bar, and an automatic tripping device acting in opposition to the stress of the locking rod or bolt pressing spring and by which said bolt may, at proper times, be withdrawn from said stop-bar.

18. In a button-sewing machine, the combination with the driving-shaft thereof, astitchforming mechanism operated from said shaft, and button-feeding appliances, of a stop-motion device consisting of the loose pulley b having the flange b", the spring-pressed clutch-dog b engaging said flange, the wheel or hub 19 fixed to said shaft and in which said clutch-dog is mounted,the stop-bar b ,a spring for forcing the latter toward the path of movement of said clutch-dog,a locking rod or bolt serving to hold said stop-bar away from said dog, a spring which forces said rod or vbolt toward said stop-bar, an automatic tripping device acting in opposition to the stress of thelocking rod or bolt pressing spring and by which said rod or bolt may, at proper times, be withdrawn from said stop-bar, and a buffer-spring, as b, to cushion the impact and lessen the jar when the machine is stopped.

19. In a button-sewing machine, the combination'with the driving-shaft thereof, a stitchforming mechanism operated from said shaft, and button-feeding appliances, of a stop and start motion device consisting of the loose pulley I) having the flange b, the springpressed clutch-dog Z2 engaging said flange, the wheel or hub 12 fixed to said shaft and in which said clutch-dog is mounted, the stopbar 11 a spring for forcing the latter toward the path of movement of said clutch-dog, the locking rod or bolt 12 adapted to engage said stop-bar and hold the latter away from said clutch-dog, a spring which forces said rod or bolt toward said stop-bar, the tripping-lever I) connected to one end of said locking rod or bolt, a rotary device to engage said tripping-leverand move the same in opposition to the pressure of the said last-named spring when the machine is to be stopped, and means,

controlled by the operator, whereby said stopbar may be withdrawn from engagement with said clutch-dog when the machine is to be started.

20. In abutton-se wing machine, the combination with the driving-shaft thereof, a stitchforming mechanism operated from said shaft, and button-feeding appliances, of a stop and start motion device consisting of the loose pulley 11 having the flange b, the springpressed clutch-dog b the wheel or hub 11 fixed to said shaft and in which said clutchdog is mounted, the stop-bar 11 provided with a rod 70 having the loop or part 71: a spring for forcing said stop-bar toward the path of movement of said clutch-dog, the locking rod or bolt b adapted to engage said stop-bar and hold the latter away from said clutch-dog, a spring which forces said rod or bolt toward said stop-bar, the tripping-lever b connected to one end of said locking rod or bolt, a rotary device to engage said tripping-lever and move the same in opposition to the stress of said last-named spring when the machine is to be stopped, the rock-shaft N having the arm n to engage said loop or part W, and a treadle-operated rod L for actuating the said arm n.

In testimony whereof I affix my signature in presence of two witnesses.

JOHN J. SULLIVAN.

Witnesses:

JOSEPH F. JAQUITH, HENRY CALVER. 

